Method assign_if_bitmap_unset

mypyc/irbuild/builder.py:575–591

(
        self, target: Register, get_val: Callable[[], Value], index: int, line: int
    )

        self.activate_block(body_block)

    def assign_if_bitmap_unset(
        self, target: Register, get_val: Callable[[], Value], index: int, line: int
    ) -> None:
        error_block, body_block = BasicBlock(), BasicBlock()
        o = self.int_op(
            bitmap_rprimitive,
            self.builder.args[-1 - index // BITMAP_BITS],
            Integer(1 << (index & (BITMAP_BITS - 1)), bitmap_rprimitive),
            IntOp.AND,
            line,
        )
        b = self.add(ComparisonOp(o, Integer(0, bitmap_rprimitive), ComparisonOp.EQ, line))
        self.add(Branch(b, error_block, body_block, Branch.BOOL))
        self.activate_block(error_block)
        self.add(Assign(target, self.coerce(get_val(), target.type, line)))
        self.goto(body_block)
        self.activate_block(body_block)

    def maybe_add_implicit_return(self) -> None:
        if is_none_rprimitive(self.ret_types[-1]) or is_object_rprimitive(self.ret_types[-1]):